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Jekyll arithmetic in conditional expression

I am trying to do some basic arithmetic in a Jekyll engine for a fluid pattern. I have assigned one variable numColumns

and I am trying to use it in a conditional expression.

{% assign numColumns = 3 %}

Note. I missed the outer for loop in the following statement where it comes from loopindex

. Regardless, this works with the operator -

and correctly evaluates to the value 2.

{% if loopindex == 3 - 1 %}

However, these alternatives I've tried don't work:

{% if loopindex == numColumns - 1 %}
{% if loopindex == numColumns | minus: 1 %}
{% if loopindex == {{ numColumns }} - 1 %}
{% if loopindex == {{ numColumns | minus: 1 }} %}

How can I subtract one from numColumns

in a conditional expression using the fluid simulator?

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1 answer


You cannot use a filter in liquid form if

.

You have to assign

evaluate the variable and then use it in the tag if

.



{% assign calc = numColumns | minus: 1 %}
{% if loopindex == calc %}
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